okay, today i spent some time removing and re-levelling a few inserts.

The ones in the first couple of pics i sanded flat before reglueing them back into the pf.

last two pics, these inserts werent too bad so i left them in place, just making sure they were level, tapping them up slightly, and running some superglue into the joins, then touching up the black circles. I did this by hand using waterbased acrylic and a fine brush. I still had a bit of fixing up to do when these pics were taken, just some scraping back with a scalpel where i had slipped a bit due to hand shake ( most noticeable in the 3rd pic), which has since been done.